package cn.ycc1.change;

/**
 * @author ycc
 * @date 2024/6/2
 */
public class LowercaseLetter implements Letter {
    public String getStr() {
        return str;
    }

    public void setStr(String str) {
        this.str = str;
    }

    private String str;

    @Override
    public String change() {
        return str.toLowerCase();
    }
}
